What are the cheapest airlines flying from Belfast to San Francisco round-trip?

Flying on British Airways is currently your cheapest option to San Francisco, with prices starting at £529. Additional return tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at £593 and £614, respectively. British Airways is currently priced 11% below the average price you’ll pay for this route.

What is the cheapest day to fly from Belfast to San Francisco?

Travellers seeking maximum savings on their Belfast to San Francisco flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Belfast to San Francisco?

Users have found that flying from Belfast to San Francisco on a Monday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Belfast to San Francisco?

Flights from Belfast to San Francisco lean towards being more expensive in June. Prices are generally better when you fly from Belfast to San Francisco in April, with the cheapest ticket starting at £394.

What airport do you fly into for flights to San Francisco from Belfast?

Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 1 airline.

Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Belfast to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.

Can I find deals for business class flights from Belfast to San Francisco?

Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£319+ Flights from Belfast to San Francisco - Compare & Save Big

Cheap flight deals from Belfast to San Francisco

Round-trip from	£529
One-way from	£319
Popular in	June
Cheapest in	April
Average price	£453

British Airways
23/8-4/9
2 total stops
30h 10m total
Belfast to San Francisco

Search Deals

3/9
3 total stops
26h 14m total
Belfast to San Francisco

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£80 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Belfast to San Francisco

Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Thu 8/506:35BHD - SFO

1 stop18h 40mBritish Airways

Mon 12/519:30SFO - BHD

1 stop14h 00mBritish Airways

Deal found 30/4£511

Thu 8/506:30BHD - SFO

2 stops17h 25mDelta

Mon 12/506:10SFO - BHD

2 stops26h 45mDelta

Deal found 30/4£529

Thu 8/519:35BFS - SFO

2 stops56h 52mMultiple Airlines

Mon 12/519:30SFO - BFS

1 stop30h 55mMultiple Airlines

Deal found 30/4£576

Fri 11/706:35BHD - SFO

2 stops20h 32mAmerican Airlines

Sat 26/715:11SFO - BHD

2 stops18h 04mAmerican Airlines

Deal found 29/4£614

Fri 11/706:35BHD - SFO

1 stop15h 15mIberia

Sat 26/716:35SFO - BHD

1 stop16h 40mIberia

Deal found 29/4£702

Thu 8/513:25BHD - SFO

3 stops35h 25mMultiple Airlines

Mon 12/511:26SFO - BHD

2 stops17h 29mMultiple Airlines

Deal found 30/4£729

Wed 30/706:30BHD - SFO

1 stop13h 15mKLM

Mon 25/813:45SFO - BHD

1 stop19h 10mKLM

Deal found 28/4£940

Best flights from Belfast to San Francisco
Discover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Sat 23/807:05BHD - SFO

1 stop14h 45mBritish Airways

Thu 4/919:20SFO - BHD

1 stop15h 25mBritish Airways

Deal found 29/4£529

Wed 20/806:30BHD - SFO

1 stop13h 15mDelta

Fri 5/917:15SFO - BHD

2 stops20h 00mDelta

Deal found 29/4£593

Fri 11/706:35BHD - SFO

2 stops20h 32mAmerican Airlines

Sat 26/715:11SFO - BHD

2 stops18h 04mAmerican Airlines

Deal found 29/4£614

Fri 11/706:35BHD - SFO

1 stop15h 15mIberia

Sat 26/716:35SFO - BHD

1 stop16h 40mIberia

Deal found 29/4£702

Sat 23/821:30BFS - SFO

3 stops31h 55mMultiple Airlines

Thu 4/911:50SFO - BFS

2 stops27h 40mMultiple Airlines

Deal found 29/4£852

Wed 30/706:30BHD - SFO

1 stop13h 15mKLM

Mon 25/813:45SFO - BHD

1 stop19h 10mKLM

Deal found 28/4£940

Wed 3/906:55BHD - SFO

2 stops17h 00mMultiple Airlines

Wed 3/919:20SFO - BHD

1 stop15h 20mMultiple Airlines

Deal found 29/4£1,015

Last-minute flights from Belfast to San Francisco
Discover last-minute flight deals from Belfast to San Francisco. Data last updated 30 April 2025 and is based on user searches.

Thu 8/506:35BHD - SFO

1 stop18h 40mBritish Airways

Mon 12/519:30SFO - BHD

1 stop14h 00mBritish Airways

Deal found 30/4£511

Thu 8/506:30BHD - SFO

2 stops17h 25mDelta

Mon 12/506:10SFO - BHD

2 stops26h 45mDelta

Deal found 30/4£529

Thu 8/519:35BFS - SFO

2 stops56h 52mMultiple Airlines

Mon 12/519:30SFO - BFS

1 stop30h 55mMultiple Airlines

Deal found 30/4£576

Thu 8/513:25BHD - SFO

3 stops35h 25mMultiple Airlines

Mon 12/511:26SFO - BHD

2 stops17h 29mMultiple Airlines

Deal found 30/4£729

One-way flights from Belfast to San Francisco
Search for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Wed 3/905:45BFS - SFO

3 stops26h 14mMultiple Airlines

Deal found 29/4£319

Wed 3/906:50BHD - SFO

1 stop18h 35mIberia

Deal found 29/4£561

Wed 3/918:00BHD - SFO

2 stops29h 55mAer Lingus

Deal found 29/4£580

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 23/8

07:05-13:50

1 stop14h 45m

San Francisco

Thu 4/9

19:20-18:45

1 stop15h 25m

£529

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 20/8

06:30-11:45

1 stop13h 15m

San Francisco

Fri 5/9

17:15-21:15

2 stops20h 00m

£593

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 11/7

06:35-19:07

2 stops20h 32m

San Francisco

Sat 26/7

15:11-17:15

2 stops18h 04m

£614

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 11/7

06:35-13:50

1 stop15h 15m

San Francisco

Sat 26/7

16:35-17:15

1 stop16h 40m

£702

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 23/8

21:30-21:25

3 stops31h 55m

San Francisco

Thu 4/9

11:50-23:30

2 stops27h 40m

£852

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 30/7

06:30-11:45

1 stop13h 15m

San Francisco

Mon 25/8

13:45-16:55

1 stop19h 10m

£940

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 3/9

06:55-15:55

2 stops17h 00m

San Francisco

Wed 3/9

19:20-18:40

1 stop15h 20m

£1,015

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 3/9

05:45-23:59

3 stops26h 14m

£319

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 3/9

06:50-17:25

1 stop18h 35m

£561

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 3/9

18:00-15:55

2 stops29h 55m

£580

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast to San Francisco

What is the cheapest month to book a flight from Belfast to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Belfast to San Francisco (average of £538). Flying from Belfast to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BFS to SFO?

One of the essential ways to save on airfare from Belfast to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 10% on airfare.

Rainfall in San Francisco by month

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing San Francisco

Peruse reviews from past customers who have flown with Delta, KLM and American Airlines from Belfast to San Francisco to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Aer Lingus

7.0

Good

1,076 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Iberia

7.0

Good

2,701 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to San Francisco from Belfast?
Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 1 airline.
What are the cheapest airlines flying from Belfast to San Francisco round-trip?
Flying on British Airways is currently your cheapest option to San Francisco, with prices starting at £529. Additional return tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at £593 and £614, respectively. British Airways is currently priced 11% below the average price you’ll pay for this route.
Can I find deals for flights from Belfast to San Francisco that include hotel bookings?
Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.
Can I find deals for business class flights from Belfast to San Francisco?
Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Belfast to San Francisco?
Currently, February is the cheapest month in which you can book a flight from Belfast to San Francisco (average of £538). Flying from Belfast to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Santa Cruz

Los Banos

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South San Francisco

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Union City

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Top airline flying from Belfast to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£407	Average£643	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Belfast to San Francisco?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Belfast today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast to San Francisco.

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Belfast today and book when prices fit your budget.

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Cheap flights from Belfast to San Francisco from £319

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Belfast to San Francisco

Cheapest flights from Belfast to San FranciscoExplore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Belfast to San Francisco

What is the cheapest month to book a flight from Belfast to San Francisco?

What is the cheapest time of day to fly from BFS to SFO?

Find hourly flight availability from Belfast to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

Peruse reviews from past customers who have flown with Delta, KLM and American Airlines from Belfast to San Francisco to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Belfast to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Francisco from Belfast?

What are the cheapest airlines flying from Belfast to San Francisco round-trip?

Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

How can I find direct flights from Belfast to San Francisco?

Can I find deals for business class flights from Belfast to San Francisco?

What is the cheapest month to book a flight from Belfast to San Francisco?

Travelling to a place near Belfast?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Belfast to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Belfast to San Francisco

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

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Travel Smart

Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.